CN104860598A - Salt slow-release material as well as preparation method and application thereof - Google Patents
Salt slow-release material as well as preparation method and application thereof Download PDFInfo
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- CN104860598A CN104860598A CN201510262508.3A CN201510262508A CN104860598A CN 104860598 A CN104860598 A CN 104860598A CN 201510262508 A CN201510262508 A CN 201510262508A CN 104860598 A CN104860598 A CN 104860598A
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Abstract
The invention relates to a salt slow-release material as well as a preparation method and an application thereof. Raw materials used for preparing the salt slow-release material comprise metakaolin powder, an activator, inorganic salt compounds, a water-proofing agent and a modifier, wherein the metakaolin powder is obtained by calcining kaolin at the temperature of 800-900 DEG C, and the specific surface area of the metakaolin powder is larger than 400 m<2>/kg. The preparation method comprises steps as follows: after the metakaolin powder, the inorganic salt compounds and the water-proofing agent are uniformly mixed, water is added, the mixture is subjected to ball milling, slurry capable of passing through a 200-mesh sieve is obtained, the activator is added for solidification, a solidification body is dried and smashed, and block gel materials are obtained and uniformly mixed with the modifier, the mixture is subjected to ball milling, and a salt release powdery material is obtained. The salt slow-release material can be applied as a snow-melting agent. According to the preparation method, by means of an inorganic gelling technology, particles of the inorganic salt compounds are directly subjected to wet coating and dry modification, and finally, the environment-friendly salt release material with hydrophobic and slow release functions is obtained.
Description
Technical field
The invention belongs to road press down ice snow melt field, be specifically related to a kind of can regulate and control dissolve rate of release release salt powder body material and preparation method thereof.
Background technology
Traditional Road Snow Agent material does not have slow-release function, adds in pavement material, is just released and finishes, lose snow melting function to winter after rainy season.
Realizing pavement material, to release salt rate-controlling be the problem that pavement construction material field relates to always, and conventional way is for controlling dissolution rate at solubilized salt Surface coating organic slow-release material.Or salt is dissolved and is loaded into porous material, then modification is carried out with by hydrophobic organic material, through multiple step, finally obtain there is certain sustained release performance store salt material, but sustained release performance does not reach and meets road from the snow melt technical requirements of more than 5 years, usually just discharges complete less than 2 years.
And the outstanding problem that existing technique exists is that cost is high, and complex process, slow release effect is poor.
Summary of the invention
The defect existed for prior art or deficiency, the invention provides a kind of slowly-releasing and release salt material.
The raw materials that slowly-releasing provided by the present invention releases salt material comprises metakaolin powder, exciting agent, inorganic salt compound, water-resisting agent and properties-correcting agent; Described metakaolin powder is that the specific surface area that kaolin obtains after 800-900 DEG C of temperature lower calcination is greater than 400m
2the powder of/kg;
Described exciting agent is the mixture of sodium hydroxide, water glass or sodium hydroxide and water glass;
Described inorganic salt compound is one or more the mixture in alkali metal chloride, alkaline earth metal chloride;
Described water-resisting agent is sodium methyl silicate or methyl SODIUMNITRATE;
Described properties-correcting agent is sodium laurylsulfonate, diethanolamine, Dodecyl trimethyl ammonium chloride, aminopropyl triethoxysilane any one.
Optionally,
The mass ratio of described metakaolin powder and exciting agent is 1:0.2-0.5;
The mass ratio of described metakaolin powder and inorganic salt compound is 1:1-3;
The mass ratio of described inorganic salt compound and water-resisting agent is 1:0.01-0.02;
The mass ratio of described inorganic salt compound and properties-correcting agent is 1:0.01-0.03.
Optionally, the granularity releasing salt material described in was 200 mesh sieves.
Invention also provides the above-mentioned preparation method releasing salt material.
The preparation method provided comprises: metakaolin powder, inorganic salt compound are added after mixing with water-resisting agent and added exciting agent after water for ball milling became 200 object slips and solidify, dry for congealed solid, fragmentation are obtained block gelatinous material, gained solid gel material is mixed rear ball milling with properties-correcting agent and obtain and release salt powder body material.
Optionally, during slurry ball-milling, water-solid ratio is 1:1.
Optionally, the drying temperature of described congealed solid is 110-180 DEG C.
Compared with prior art, environmental protection of the present invention is released the beneficial effect of salt powder body material and is:
(1) preparation method of the present invention is by by inorganic gel technology, to inorganic salt chalcogenide particles carry out direct wet method coated-technique of dry method modification, finally obtain the environmental protection with hydrophobic and slow-release function and release salt material.
(2) material dissolves sustained release performance of the present invention is controlled, releases salt speed and is realized by feed change proportioning and coated number of times, release salt speed controllability good.
(3) material preparation process of the present invention is simple, with low cost, is convenient to large-scale industrial production.
Accompanying drawing explanation
Fig. 1 is reference process plan schema of the present invention.
Embodiment
Of the present invention release salt material be mainly used in pavement material field relate to snow melt application.
Shown in composition graphs 1, of the present invention to release salt powder body material preparation technology as follows:
(1) mix (each raw material can be added in ball mill during mixing and carry out wet ball grinding) by after above-mentioned metakaolin powder, inorganic salt compound, water-resisting agent in proportion proportioning, obtain the slip of high uniformity;
(2) in slip, add exciting agent solidification solidify;
(3) congealed solid is dried, broken solid gums gel material;
(4) in solid gums gel material, add properties-correcting agent, and it is hydrophobic modified to carry out ball milling, obtains and release salt powder body material product.
Below the specific embodiment that contriver provides, to be further explained explanation to technical scheme of the present invention.
Embodiment 1:
10 kilograms, metakaolin powder, 30 kilograms, sodium-chlor, sodium methyl silicate 1 kilogram (45% aqueous solution), 40 kilograms, tap water, ball milling 2 hours in the ceramic ball mill of 50rpm rotating speed, after discharging, add 2 kilograms of sodium hydroxide, after leaving standstill solidification after stirring, dry 4 hours at the temperature of 120 DEG C, the particulate material being less than 5 millimeters is broken at jaw crusher, properties-correcting agent Sodium dodecylbenzene sulfonate 0.5 kilogram is added in ball mill, ball milling modification 2 hours, acquisition is less than the obvious slow release type of 200 order hydrophobic nature and releases salt powder body material, get the deionized water that 1 gram of powder puts into 150 milliliters, measure chlorion and separate out concentration, in table 1.
Table 1
Embodiment 2:
15 kilograms, metakaolin powder, 30 kilograms, sodium-chlor, methyl SODIUMNITRATE 1.2 kilograms (45% aqueous solution), 45 kilograms, tap water, ball milling 2 hours in the ceramic ball mill of 50rpm rotating speed, after discharging, add 4 kg of water glass water glass, after leaving standstill solidification after stirring, dry 4 hours at the temperature of 120 DEG C, the particulate material being less than 5 millimeters is broken at jaw crusher, properties-correcting agent aminopropyl triethoxysilane 0.5 kilogram is added in ball mill, ball milling modification 2 hours, acquisition is less than the obvious slow release type of 200 order hydrophobic nature and releases salt powder body material, get the deionized water that 1 gram of powder puts into 150 milliliters, measure chlorion and separate out concentration, in table 2.
Table 2
Embodiment 3:
13 kilograms, metakaolin powder, 30 kilograms, sodium-chlor, methyl SODIUMNITRATE 1.2 kilograms (45% aqueous solution), 45 kilograms, tap water, ball milling 2 hours in the ceramic ball mill of 50rpm rotating speed, after discharging, add 5 kg of water glass water glass, after leaving standstill solidification after stirring, dry 4 hours at the temperature of 120 DEG C, the particulate material being less than 5 millimeters is broken at jaw crusher, properties-correcting agent diethanolamine 0.5 kilogram is added in ball mill, ball milling modification 2 hours, acquisition is less than the obvious slow release type of 200 order hydrophobic nature and releases salt powder body material, get the deionized water that 1 gram of powder puts into 150 milliliters, measure chlorion and separate out concentration, in table 3.
Table 3
Embodiment 4:
12 kilograms, metakaolin powder, 20 kilograms, calcium chloride, methyl SODIUMNITRATE 1.2 kilograms (45% aqueous solution), 45 kilograms, tap water, ball milling 2 hours in the ceramic ball mill of 50rpm rotating speed, after discharging, add 3 kg of water glass water glass, after leaving standstill solidification after stirring, dry 4 hours at the temperature of 120 DEG C, the particulate material being less than 5 millimeters is broken at jaw crusher, properties-correcting agent diethanolamine 0.5 kilogram is added in ball mill, ball milling modification 2 hours, acquisition is less than the obvious slow release type of 200 order hydrophobic nature and releases salt powder body material, get the deionized water that 1 gram of powder puts into 150 milliliters, measure chlorion and separate out concentration, in table 4.
Table 4
Claims (7)
1. slowly-releasing releases a salt material, it is characterized in that, this is released salt material and comprises metakaolin powder, exciting agent, inorganic salt compound, water-resisting agent and properties-correcting agent;
Described metakaolin powder is that the specific surface area that kaolin obtains after 800-900 DEG C of temperature lower calcination is greater than 400m
2the powder of/kg;
Described exciting agent is the mixture of sodium hydroxide, water glass or sodium hydroxide and water glass;
Described inorganic salt compound is one or more the mixture in alkali metal chloride, alkaline earth metal chloride;
Described water-resisting agent is sodium methyl silicate or methyl SODIUMNITRATE;
Described properties-correcting agent is sodium laurylsulfonate, diethanolamine, Dodecyl trimethyl ammonium chloride, aminopropyl triethoxysilane any one.
2. slowly-releasing as claimed in claim 1 releases salt material, it is characterized in that,
The mass ratio of described metakaolin powder and exciting agent is 1:0.2-0.5;
The mass ratio of described metakaolin powder and inorganic salt compound is 1:1-3;
The mass ratio of described inorganic salt compound and water-resisting agent is 1:0.01-0.02;
The mass ratio of described inorganic salt compound and properties-correcting agent is 1:0.01-0.03.
3. slowly-releasing as claimed in claim 1 releases salt material, it is characterized in that, described in release salt material granularity be 200 mesh sieves.
4. slowly-releasing described in claim 1 releases the preparation method of salt material, it is characterized in that, described preparation method comprises: metakaolin powder, inorganic salt compound are added after mixing with water-resisting agent and to add exciting agent solidification after water for ball milling became 200 object slips and solidify, dry for congealed solid, fragmentation are obtained solid gel material, gained solid gel material is mixed rear ball milling with properties-correcting agent and obtain and release salt powder body material.
5. preparation method as claimed in claim 4, it is characterized in that, during slurry ball-milling, water-solid ratio is 1:1.
6. preparation method as claimed in claim 4, it is characterized in that, the drying temperature of described congealed solid is 110-180 DEG C.
7. slowly-releasing described in claim 1 releases the application of salt material as Snow Agent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510262508.3A CN104860598B (en) | 2015-05-21 | 2015-05-21 | A kind of slow release releases salt material and preparation method and application |
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| CN201510262508.3A CN104860598B (en) | 2015-05-21 | 2015-05-21 | A kind of slow release releases salt material and preparation method and application |
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| CN104860598A true CN104860598A (en) | 2015-08-26 |
| CN104860598B CN104860598B (en) | 2017-03-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630721A (en) * | 2016-09-28 | 2017-05-10 | 沈阳建筑大学 | Sustained-release anti-freezing point asphalt pavement admixture and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3808250A1 (en) * | 1988-03-12 | 1989-09-21 | Veba Oel Ag | ROAD FURNISHING FROM AN ASPHALT MIXTURE WITH A COMPRESSIVE COMPOUND |
| US6982044B2 (en) * | 2001-12-20 | 2006-01-03 | Josef Suren | Method and composition for preventing traffic surfaces becoming slippery in winter |
| CN102092978A (en) * | 2010-12-15 | 2011-06-15 | 长安大学 | Environmental-protection self-snow-melting asphalt pavement admixture and preparation method thereof |
| CN102604297A (en) * | 2012-03-09 | 2012-07-25 | 湖北省高速公路实业开发有限公司 | Slow-release anti-icing material for bituminous pavement and preparation method thereof |
| CN104355784A (en) * | 2014-10-14 | 2015-02-18 | 成都新柯力化工科技有限公司 | Slow release fertilizer comprising fly ash gel and preparation method of slow release fertilizer |
-
2015
- 2015-05-21 CN CN201510262508.3A patent/CN104860598B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3808250A1 (en) * | 1988-03-12 | 1989-09-21 | Veba Oel Ag | ROAD FURNISHING FROM AN ASPHALT MIXTURE WITH A COMPRESSIVE COMPOUND |
| US6982044B2 (en) * | 2001-12-20 | 2006-01-03 | Josef Suren | Method and composition for preventing traffic surfaces becoming slippery in winter |
| CN102092978A (en) * | 2010-12-15 | 2011-06-15 | 长安大学 | Environmental-protection self-snow-melting asphalt pavement admixture and preparation method thereof |
| CN102604297A (en) * | 2012-03-09 | 2012-07-25 | 湖北省高速公路实业开发有限公司 | Slow-release anti-icing material for bituminous pavement and preparation method thereof |
| CN104355784A (en) * | 2014-10-14 | 2015-02-18 | 成都新柯力化工科技有限公司 | Slow release fertilizer comprising fly ash gel and preparation method of slow release fertilizer |
Non-Patent Citations (1)
| Title |
|---|
| 曾泽湘等: "盐化物抑冰沥青混合料类型与拌和工艺的研究", 《建筑机械技术与管理》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630721A (en) * | 2016-09-28 | 2017-05-10 | 沈阳建筑大学 | Sustained-release anti-freezing point asphalt pavement admixture and preparation method thereof |
| CN106630721B (en) * | 2016-09-28 | 2019-07-02 | 沈阳建筑大学 | A kind of anticoagulant asphalt pavement admixture of slow-release and preparation method thereof |
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